And the professional-liar class (the press) ignores it.
Actually, the press has asked Obama about it several times. Most recently, CNN asked his press agent, who lied again and said that it was old news.
You are certainly right that the press has an almost irresistible instinct developed over the past 40 or 50 years to sweep any left-wing sins committed by Democrats under the rug.
But there is some hope, because if Obama keeps scoffing at them and insulting them and refusing to give them any payback by inviting them to White House parties, and refusing to give them any real press conferences, then sooner or later thay are going to start going after him.
Clinton at least had enough sense to reward his friends (until they were past using) and punish his enemies. Obama looks down his snoot at everyone—except, apparently, the Keeper of the Holy Places.
If he was going to bow to anybody it should have been the Queen of England, but instead he let his wife put her paws all over the lady. That was bad form.